| Package | Description | 
|---|---|
| io.netty.channel | 
 The core channel API which is asynchronous and event-driven abstraction of
 various transports such as a
 NIO Channel. 
 | 
| io.netty.util | 
 Utility classes used across multiple packages. 
 | 
| Modifier and Type | Method and Description | 
|---|---|
<T> Attribute<T> | 
ChannelHandlerContext.attr(AttributeKey<T> key)
Deprecated. 
 
 | 
| Modifier and Type | Method and Description | 
|---|---|
<T> Attribute<T> | 
AttributeMap.attr(AttributeKey<T> key)
Get the  
Attribute for the given AttributeKey. | 
<T> Attribute<T> | 
DefaultAttributeMap.attr(AttributeKey<T> key)  | 
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